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Form 4 · Statement of Changes in Beneficial Ownership · Filed 2026-06-12

Kordasiewicz Holly B. Files Ionis Pharmaceuticals (IONS) Form 4 - June 12, 2026

Kordasiewicz Holly B. traded 121.7K IONS shares worth $7.8M in this Form 4 filing, reported to the SEC on 2026-06-12.

Issuer
Ionis Pharmaceuticals Inc. IONS · NASDAQ
Filed
Period
2026-06-12
Accession
0000874015-26-000208

Transactions (6)

Insider Date Type Shares Price Value Own
Kordasiewicz Holly B. 2026-06-12 Buy 8.0K $60.89 $484.1K Direct
Kordasiewicz Holly B. 2026-06-12 Buy 21.0K $60.89 $1.3M Direct
Kordasiewicz Holly B. 2026-06-12 Buy 12.0K $32.60 $391.2K Direct
Kordasiewicz Holly B. 2026-06-12 Buy 19.9K $56.78 $1.1M Direct
Kordasiewicz Holly B. 2026-06-12 Sell 41.0K $73.09 $3.0M Direct
Kordasiewicz Holly B. 2026-06-12 Sell 19.8K $74.05 $1.5M Direct
Net change0−$1.2M

About Ionis Pharmaceuticals Inc.

Ionis Pharmaceuticals Inc. is a biotechnology company focused on discovering and developing RNA-targeted therapeutics. The primary mission of Ionis is to harness its expertise in antisense oligonucleotide technology to address complex genetic disorders. Ionis is pioneering in the field of RNA-targeted drug discovery, aiming to treat a wide range of diseases, including neurological, cardiovascular, metabolic, and cancer-related conditions. Notably, the company has a robust pipeline of drugs in various stages of development and partnerships with leading pharmaceutical companies to expand the reach and impact of its therapeutic discoveries. As an innovative entity in the biotechnology sector, Ionis Pharmaceuticals plays a significant role in advancing medical treatments that target the underlying genetic causes of diseases, thereby offering new hope and potential solutions to patients worldwide. Its advancements contribute substantially to the growth and evolution of personalized medicine, emphasizing the importance of genetic research in modern healthcare.

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